iterable Questions
4
Solved
I've got a set of rows in a database, and I'd like to provide an interface to spin through them like this:
def findAll: Iterable[MyObject]
Where we don't require having all the instances in memo...
25
Solved
Is there a method like isiterable? The only solution I have found so far is to call
hasattr(myObj, '__iter__')
But I am not sure how fool-proof this is.
3
Solved
Help! I'm learning to love Javascript after programming in C# for quite a while but I'm stuck learning to love the iterable protocol!
Why did Javascript adopt a protocol that requires creating a n...
Hundredpercenter asked 22/12, 2018 at 9:52
5
I am not able to find a simple way how to initialize a Pydantic object from field values given by position (for example in a list instead of a dictionary) so I have written class method positional_...
8
Solved
I'm trying to find an elegant way to find the max value in a two-dimensional array.
for example for this array:
[0, 0, 1, 0, 0, 1] [0, 1, 0, 2, 0, 0][0, 0, 2, 0, 0, 1][0, 1, 0, 3, 0, 0][0, 0, 0, 0...
2
Solved
In PHP 7.1 there is a new iterable psudo-type which abstracts arrays and Traversable objects.
Suppose that in my code I have a class like the following:
class Foo
{
private $iterable;
public f...
3
I want to map a list of Objects to an Object that contains a list:
public class Group {
private List<Person> people;
}
public class Person {
private String name;
}
I tried creating a ma...
8
Solved
Suppose I have an arbitrary iterable - for example, a generator that iterates over lines of a file and yields the ones matching a regex.
How can I count the number of items in that iterable, suppos...
4
Solved
and both of them get a Consumer as parameter. so if Java 8, is meant to avoid confusions, like it has done in Time API, why has it added a new confusion? or am I missing some point?
15
Solved
I am new in Java and I'm really confused with iterator and iterable. Can anyone explain to me and give some examples?
7
What's the shortest way to get first item of OrderedDict in Python 3?
My best:
list(ordered_dict.items())[0]
Quite long and ugly.
I can think of:
next(iter(ordered_dict.items())) # Fixed, th...
Lobation asked 11/1, 2014 at 13:25
21
Solved
In my application I use 3rd party library (Spring Data for MongoDB to be exact).
Methods of this library return Iterable<T>, while the rest of my code expects Collection<T>.
Is there an...
Gillum asked 20/6, 2011 at 19:56
16
Solved
Why isn't is possible to use objects in for of loops? Or is this a browser bug? This code doesn't work in Chrome 42, saying undefined is not a function:
test = { first: "one"}
for(var item of tes...
Biform asked 27/4, 2015 at 0:13
4
Solved
I have been going over the tqdm docs, but no matter where I look, I cannot find a method by which to extract the time passed and estimated time remaining fields (basically the center of the progres...
Altruism asked 19/6, 2019 at 23:45
4
Solved
Python list comprehension is really simple:
>>> l = [x for x in range(1, 10) if x % 2 == 0]
>>> [2, 4, 6, 8]
Does Rust have an equivalent syntax like:
let vector = vec![x for...
Wages asked 24/7, 2017 at 14:18
6
Solved
In Java 5 and above you have the foreach loop, which works magically on anything that implements Iterable:
for (Object o : list) {
doStuff(o);
}
However, Enumerable still does not implement Ite...
Esposito asked 26/8, 2008 at 1:57
3
Solved
I've already looked at this post about iterable python errors:
"Can only iterable" Python error
But that was about the error "cannot assign an iterable". My question is why is python te...
Laryngology asked 21/8, 2015 at 15:29
5
Solved
I have a string
sample = "http://www.stackoverflow.com"
I want convert this string to a set
final = {"http://www.stackoverflow.com"}
I tried the following code:
final = set(sample)
But i ...
Deming asked 28/11, 2014 at 16:10
6
Solved
Which one of these is considered the more pythonic, taking into account scalability and readability?
Using enumerate:
group = ['A','B','C']
tag = ['a','b','c']
for idx, x in enumerate(group):
pr...
1
Solved
I need to match cases where the input is iterable. Here's what I tried:
from typing import Iterable
def detector(x: Iterable | int | float | None) -> bool:
match x:
case Iterable():
print('I...
Involucrum asked 1/3, 2022 at 19:41
1
Solved
First time trying typescript.
I have an object that looks like
interface Job {
//... some data
priority: number
}
and I want to return the highest priority from a Set of Jobs (note: not the Job i...
Knotts asked 22/2, 2022 at 19:35
14
Solved
If I have a collection, such as Collection<String> strs, how can I get the first item out? I could just call an Iterator, take its first next(), then throw the Iterator away. Is there a less ...
Consecutive asked 4/11, 2009 at 2:22
1
I got stuck, trying to implement combine logic for a list of mixed iterables, i.e. I have a list of Iterable + Iterator + AsyncIterable + AsyncIterator, for which I'm trying to combine them togethe...
Cuculiform asked 19/12, 2021 at 9:35
4
Something similar to question Convert ES6 Iterable to Array. But I only want first N items. Is there any built-in for me to do so? Or how can I achieve this more elegantly?
let N = 100;
function *...
Jonathonjonati asked 29/11, 2017 at 1:54
2
Solved
I want to get the last element of a lazy but finite Seq in Raku, e.g.:
my $s = lazy gather for ^10 { take $_ };
The following don't work:
say $s[* - 1];
say $s.tail;
These ones work but don't see...
Pneumonic asked 4/12, 2021 at 17:50
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